What had the greatest effect on the growth of cities? political changes action by the federal government transportation innovations leadership from mayors

## Step 1<br />The question asks us to identify the factor that had the greatest effect on the growth of cities. The options provided are political changes, action by the federal government, transportation innovations, and leadership from.<br /><br />## Step 2<br />We need to consider each option and its potential impact on the growth of cities. <br /><br />## Step 3<br />Political changes and federal government actions can influence the growth of cities, but these changes often require a significant amount of time to implement and have a noticeable impact.<br /><br />## Step 4<br />Leadership from mayors can also influence the growth of cities, but this is often limited by the resources available to the city.<br /><br />## Step 5<br />Transportation innovations, on the other hand, can have a significant impact on the growth of cities. They can make it easier for people to commute to work, access services, and travel to other cities. This can lead to an increase in population and economic activity, which can stimulate further growth.